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vmprofiler-cli
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added --findentries to find all vm enters... shit works...

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master
IDontCode 3 years ago
parent 240877120e
commit 50574c1b9d
2 changed files with 266 additions and 142 deletions
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2
dependencies/vmprofiler vendored

@ -1 +1 @@
Subproject commit 300eed7a62afb0e57056afef1d243092e9667533 Subproject commit ade6b0fdd77d43c06bab255011675dffce1507ab

268
src/main.cpp
Unescape View File

@ -1,19 +1,18 @@
#include <ZydisExportConfig.h> #include <ZydisExportConfig.h>
#include <algorithm>
#include <cli-parser.hpp>
#include <filesystem> #include <filesystem>
#include <fstream> #include <fstream>
#include <iostream> #include <iostream>
#include <algorithm>
#include <nt/image.hpp> #include <nt/image.hpp>
#include <cli-parser.hpp>
#include <vmprofiler.hpp> #include <vmprofiler.hpp>
auto open_binary_file( const std::string &file, std::vector< uint8_t > &data ) -> bool auto open_binary_file(const std::string &file, std::vector<uint8_t> &data)
{ -> bool {
std::ifstream fstr(file, std::ios::binary); std::ifstream fstr(file, std::ios::binary);
if ( !fstr.is_open() ) if (!fstr.is_open()) return false;
return false;
fstr.unsetf(std::ios::skipws); fstr.unsetf(std::ios::skipws);
fstr.seekg(0, std::ios::end); fstr.seekg(0, std::ios::end);
@ -22,46 +21,61 @@ auto open_binary_file( const std::string &file, std::vector< uint8_t > &data ) -
fstr.seekg(NULL, std::ios::beg); fstr.seekg(NULL, std::ios::beg);
data.reserve(static_cast<uint32_t>(file_size)); data.reserve(static_cast<uint32_t>(file_size));
data.insert( data.begin(), std::istream_iterator< uint8_t >( fstr ), std::istream_iterator< uint8_t >() ); data.insert(data.begin(), std::istream_iterator<uint8_t>(fstr),
std::istream_iterator<uint8_t>());
return true; return true;
} }
int __cdecl main( int argc, const char *argv[] ) int __cdecl main(int argc, const char *argv[]) {
{ argparse::argument_parser_t parser("vmprofiler-cli",
argparse::argument_parser_t parser( "vmprofiler-cli", "virtual machine information inspector" ); "virtual machine information inspector");
parser.add_argument().names( { "--bin", "--vmpbin" } ).description( "unpacked binary protected with VMProtect 2" ); parser.add_argument()
parser.add_argument().names( { "--vmentry", "--entry" } ).description( "rva to push prior to a vm_entry" ); .names({"--bin", "--vmpbin"})
parser.add_argument().name( "--showhandlers" ).description( "show all vm handlers..." ); .description("unpacked binary protected with VMProtect 2");
parser.add_argument().name( "--showhandler" ).description( "show a specific vm handler given its index..." ); parser.add_argument()
parser.add_argument().name( "--indexes" ).description( "displays vm handler table indexes for a given vm handler name such as 'READQ', or 'WRITEQ'..." ); .names({"--vmentry", "--entry"})
.description("rva to push prior to a vm_entry");
parser.add_argument()
.name("--showhandlers")
.description("show all vm handlers...");
parser.add_argument()
.name("--showhandler")
.description("show a specific vm handler given its index...");
parser.add_argument()
.name("--indexes")
.description(
"displays vm handler table indexes for a given vm handler name such "
"as 'READQ', or 'WRITEQ'...");
parser.add_argument()
.name("--findentries")
.description(
"finds all virtual machine entries and displays information for "
"them...");
parser.enable_help(); parser.enable_help();
auto err = parser.parse(argc, argv); auto err = parser.parse(argc, argv);
if ( err ) if (err) {
{
std::cout << err << std::endl; std::cout << err << std::endl;
return -1; return -1;
} }
if ( parser.exists( "help" ) ) if (parser.exists("help")) {
{
parser.print_help(); parser.print_help();
return 0; return 0;
} }
if ( parser.exists( "bin" ) && parser.exists( "vmentry" ) ) if (parser.exists("bin")) {
{ if (!std::filesystem::exists(parser.get<std::string>("bin"))) {
if ( !std::filesystem::exists( parser.get< std::string >( "bin" ) ) ) std::printf(
{ "> path to protected file is invalid... check your cli args...\n");
std::printf( "> path to protected file is invalid... check your cli args...\n" );
return -1; return -1;
} }
std::vector<std::uint8_t> module_data, tmp; std::vector<std::uint8_t> module_data, tmp;
if(!open_binary_file(parser.get< std::string >( "bin" ), module_data)) if (!open_binary_file(parser.get<std::string>("bin"), module_data)) {
{ std::printf("[!] failed to open binary = %s\n",
std::printf("[!] failed to open binary = %s\n", parser.get< std::string >( "bin" ).c_str()); parser.get<std::string>("bin").c_str());
return -1; return -1;
} }
@ -71,107 +85,217 @@ int __cdecl main( int argc, const char *argv[] )
tmp.resize(image_size); tmp.resize(image_size);
std::memcpy(tmp.data(), module_data.data(), 0x1000); std::memcpy(tmp.data(), module_data.data(), 0x1000);
std::for_each(img->get_nt_headers()->get_sections(), std::for_each(img->get_nt_headers()->get_sections(),
img->get_nt_headers()->get_sections() + img->get_nt_headers()->file_header.num_sections, img->get_nt_headers()->get_sections() +
[&](const auto& section_header) img->get_nt_headers()->file_header.num_sections,
{ [&](const auto &section_header) {
std::memcpy(tmp.data() + section_header.virtual_address, std::memcpy(
tmp.data() + section_header.virtual_address,
module_data.data() + section_header.ptr_raw_data, module_data.data() + section_header.ptr_raw_data,
section_header.size_raw_data); section_header.size_raw_data);
}); });
const auto module_base = reinterpret_cast<std::uintptr_t>(tmp.data()); const auto module_base = reinterpret_cast<std::uintptr_t>(tmp.data());
const auto vm_entry_rva = std::strtoull( parser.get< std::string >( "vmentry" ).c_str(), nullptr, 16 );
const auto image_base = img->get_nt_headers()->optional_header.image_base; const auto image_base = img->get_nt_headers()->optional_header.image_base;
std::printf( "> module base = %p, image base = %p, image size = %p, vm entry = 0x%x\n", module_base, image_base, if (parser.exists("vmentry")) {
image_size, vm_entry_rva ); const auto vm_entry_rva = std::strtoull(
parser.get<std::string>("vmentry").c_str(), nullptr, 16);
std::printf(
"> module base = %p, image base = %p, image size = %p, vm entry = "
"0x%x\n",
module_base, image_base, image_size, vm_entry_rva);
vm::ctx_t vmctx(module_base, image_base, image_size, vm_entry_rva); vm::ctx_t vmctx(module_base, image_base, image_size, vm_entry_rva);
if ( !vmctx.init() ) if (!vmctx.init()) {
{ std::printf(
std::printf( "[!] failed to init vm::ctx_t... make sure all cli arguments are correct!\n" ); "[!] failed to init vm::ctx_t... make sure all cli arguments are "
"correct!\n");
return -1; return -1;
} }
std::puts( "======================== [vm entry] ========================\n" ); std::puts(
"======================== [vm entry] ========================\n");
std::for_each(vmctx.vm_entry.begin(), vmctx.vm_entry.end(),
[&](zydis_instr_t &instr) {
instr.addr -= module_base;
instr.addr += image_base;
});
vm::util::print(vmctx.vm_entry); vm::util::print(vmctx.vm_entry);
std::puts( "======================== [calc jmp] ========================\n" ); std::puts(
vm::util::print( vmctx.calc_jmp ); "======================== [calc jmp] ========================\n");
std::puts( "============================================================\n" );
std::for_each(vmctx.calc_jmp.begin(), vmctx.calc_jmp.end(),
[&](zydis_instr_t &instr) {
instr.addr -= module_base;
instr.addr += image_base;
});
std::puts(
"============================================================\n");
std::printf("> vip advancement = %s\n\n", std::printf("> vip advancement = %s\n\n",
vmctx.exec_type == vmp2::exec_type_t::forward ? "forward" : "backward" ); vmctx.exec_type == vmp2::exec_type_t::forward ? "forward"
: "backward");
if ( parser.exists( "showhandlers" ) ) if (parser.exists("showhandlers")) {
{ for (auto idx = 0u; idx < vmctx.vm_handlers.size(); ++idx) {
for ( auto idx = 0u; idx < vmctx.vm_handlers.size(); ++idx ) std::printf(
{ "======================== [%s #%d] ========================\n",
std::printf( "======================== [%s #%d] ========================\n", vmctx.vm_handlers[idx].profile
vmctx.vm_handlers[ idx ].profile ? vmctx.vm_handlers[ idx ].profile->name : "UNK", idx ); ? vmctx.vm_handlers[idx].profile->name
: "UNK",
idx);
vm::util::print(vmctx.vm_handlers[idx].instrs); vm::util::print(vmctx.vm_handlers[idx].instrs);
// if there is no imm then there are no transforms... // if there is no imm then there are no transforms...
if ( !vmctx.vm_handlers[ idx ].imm_size ) if (!vmctx.vm_handlers[idx].imm_size) {
{
std::puts("\n"); std::puts("\n");
continue; continue;
} }
std::puts( "======================== [transforms] ========================\n" ); std::puts(
for ( auto &[ mnemonic, instr ] : vmctx.vm_handlers[ idx ].transforms ) "======================== [transforms] "
{ "========================\n");
if ( instr.mnemonic == ZYDIS_MNEMONIC_INVALID ) for (auto &[mnemonic, instr] : vmctx.vm_handlers[idx].transforms) {
continue; if (instr.mnemonic == ZYDIS_MNEMONIC_INVALID) continue;
vm::util::print(instr); vm::util::print(instr);
} }
std::puts("\n"); std::puts("\n");
} }
} }
else if ( parser.exists( "showhandler" ) ) if (parser.exists("showhandler")) {
{ const auto vm_handler_idx = std::strtoul(
const auto vm_handler_idx = std::strtoul( parser.get< std::string >( "showhandler" ).c_str(), nullptr, 10 ); parser.get<std::string>("showhandler").c_str(), nullptr, 10);
if ( vm_handler_idx > 256 ) if (vm_handler_idx > 256) {
{
std::printf("> invalid vm handler index... too large...\n"); std::printf("> invalid vm handler index... too large...\n");
return -1; return -1;
} }
std::printf( "======================== [%s #%d] ========================\n", std::printf(
vmctx.vm_handlers[ vm_handler_idx ].profile ? vmctx.vm_handlers[ vm_handler_idx ].profile->name "======================== [%s #%d] ========================\n",
vmctx.vm_handlers[vm_handler_idx].profile
? vmctx.vm_handlers[vm_handler_idx].profile->name
: "UNK", : "UNK",
vm_handler_idx); vm_handler_idx);
vm::util::print(vmctx.vm_handlers[vm_handler_idx].instrs); vm::util::print(vmctx.vm_handlers[vm_handler_idx].instrs);
// if there is no imm then there are no transforms... // if there is no imm then there are no transforms...
if ( !vmctx.vm_handlers[ vm_handler_idx ].imm_size ) if (!vmctx.vm_handlers[vm_handler_idx].imm_size) {
{
std::puts("\n"); std::puts("\n");
return {}; return {};
} }
std::puts( "======================== [transforms] ========================\n" ); std::puts(
for ( auto &[ mnemonic, instr ] : vmctx.vm_handlers[ vm_handler_idx ].transforms ) "======================== [transforms] ========================\n");
{
if ( instr.mnemonic == ZYDIS_MNEMONIC_INVALID ) for (auto &[mnemonic, instr] :
vmctx.vm_handlers[vm_handler_idx].transforms) {
if (instr.mnemonic == ZYDIS_MNEMONIC_INVALID) continue;
vm::util::print(instr);
}
std::puts("\n");
}
if (parser.exists("indexes")) {
const auto handler_name = parser.get<std::string>("indexes");
std::printf("{\n");
for (auto idx = 0u; idx < vmctx.vm_handlers.size(); ++idx)
if (vmctx.vm_handlers[idx].profile &&
!strcmp(vmctx.vm_handlers[idx].profile->name,
handler_name.c_str()))
std::printf("\t0x%x,\n", idx);
std::printf("}\n");
}
}
if (parser.exists("findentries")) {
std::printf("> scanning for all entries...\n");
const auto entries = vm::locate::get_vm_entries(module_base, image_size);
std::printf("> number of entries located = %d\n", entries.size());
for (const auto &vm_enter : entries) {
vm::ctx_t vmctx(module_base, image_base, image_size, vm_enter.rva);
if (!vmctx.init()) {
std::printf(
"[!] failed to init vm::ctx_t... make sure all cli arguments are "
"correct!\n");
return -1;
}
std::puts(
"======================== [vm entry] ========================\n");
std::for_each(vmctx.vm_entry.begin(), vmctx.vm_entry.end(),
[&](zydis_instr_t &instr) {
instr.addr -= module_base;
instr.addr += image_base;
});
vm::util::print(vmctx.vm_entry);
std::puts(
"======================== [calc jmp] ========================\n");
std::for_each(vmctx.calc_jmp.begin(), vmctx.calc_jmp.end(),
[&](zydis_instr_t &instr) {
instr.addr -= module_base;
instr.addr += image_base;
});
vm::util::print(vmctx.calc_jmp);
std::puts(
"============================================================\n");
std::printf("> vip advancement = %s\n\n",
vmctx.exec_type == vmp2::exec_type_t::forward ? "forward"
: "backward");
if (parser.exists("showhandlers")) {
for (auto idx = 0u; idx < vmctx.vm_handlers.size(); ++idx) {
std::printf(
"======================== [%s #%d] ========================\n",
vmctx.vm_handlers[idx].profile
? vmctx.vm_handlers[idx].profile->name
: "UNK",
idx);
vm::util::print(vmctx.vm_handlers[idx].instrs);
// if there is no imm then there are no transforms...
if (!vmctx.vm_handlers[idx].imm_size) {
std::puts("\n");
continue; continue;
}
std::puts(
"======================== [transforms] "
"========================\n");
for (auto &[mnemonic, instr] : vmctx.vm_handlers[idx].transforms) {
if (instr.mnemonic == ZYDIS_MNEMONIC_INVALID) continue;
vm::util::print(instr); vm::util::print(instr);
} }
std::puts("\n"); std::puts("\n");
} }
else if ( parser.exists( "indexes" ) ) }
{
if (parser.exists("indexes")) {
const auto handler_name = parser.get<std::string>("indexes"); const auto handler_name = parser.get<std::string>("indexes");
std::printf("{\n"); std::printf("{\n");
for (auto idx = 0u; idx < vmctx.vm_handlers.size(); ++idx) for (auto idx = 0u; idx < vmctx.vm_handlers.size(); ++idx)
if (vmctx.vm_handlers[idx].profile && if (vmctx.vm_handlers[idx].profile &&
!strcmp( vmctx.vm_handlers[ idx ].profile->name, handler_name.c_str() ) ) !strcmp(vmctx.vm_handlers[idx].profile->name,
handler_name.c_str()))
std::printf("\t0x%x,\n", idx); std::printf("\t0x%x,\n", idx);
std::printf("}\n"); std::printf("}\n");
} }
} }
} }
}
}
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